Survival, growth and wood specific gravity of interspecific hybrids of Pinus strobus and P. wallichiana grown in Ontario

Lu, Pengxin; Sinclair, Robert W.

doi:10.1016/j.foreco.2006.06.027

Cited by 5 publications

(7 citation statements)

References 8 publications

(11 reference statements)

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“…The successful hybrids produced to date are listed in Table 1. With varying levels of backcrossing to P. strobus, some of these hybrids have shown promise in terms of their blister rust resistance, adaptation, growth performances, and wood quality (Heimburger 1972;Lu et al 2005Lu et al , 2007Lu and Sinclair 2006). …”

Section: Historical White Pine Breeding Efforts In Ontariomentioning

confidence: 99%

“…Since the 1950s, nearly 3 dozen field trials were established in Ontario involving P. wallichiana and/or its interspecific hybrids with P. strobus. The objective of these trials was mostly to test growth and adaptation of the hybrid crosses to growing conditions in Ontario (Lu and Sinclair 2006). Currently, seedlings from the second-generation backcrosses (with 87.5% parentage from P. strobus) have confirmed satisfactory blister rust resistance, good adaptation, and outstanding growth rates.…”

Section: Breeding Eastern White Pine Interspecific Hybridsmentioning

confidence: 99%

“…In addition to blister rust resistance, Ontario's intermediate breeding material has been assessed for cold hardiness, growth performance, and wood quality (Lu et al 2005(Lu et al , 2007Lu and Sinclair 2006). Preliminary results indicated that desirable characteristics of P. strobus have been progressively recovered in the hybrid progeny through backcrossing with P. strobus.…”

Section: Progress In Breeding For Blister Rust Resistancementioning

confidence: 99%

“…Preliminary results indicated that desirable characteristics of P. strobus have been progressively recovered in the hybrid progeny through backcrossing with P. strobus. Long-term field trials have shown that some B 1 F 1 backcrosses (with 75% P. strobus parentage) adapted and grew well in southern Ontario, with wood quality comparable to pure eastern white pine trees (Lu and Sinclair 2006). Currently, more B 1 F 1, and B 2 F 1 backcrosses (with 75% and 87.5% P. strobus parentage, respectively) are being tested in more northerly environments in Ontario, where blister rust hazard is high and frost damage is likely.…”

Section: Progress In Breeding For Blister Rust Resistancementioning

confidence: 99%

“…While the adaptability, growth potential, and wood quality of the hybrid white pines have been reported from long-term field trials established in eastern and southern Ontario where winters are relatively mild (Lu and Sinclair 2006), information is sparse from northern Ontario where winters are harsher. The major concern is that the hybrid white pine may not adapt to the harsher environments due to insufficient cold For personal use only.…”

Section: Field Testing and Demonstrating Resistancementioning

confidence: 99%

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Breeding eastern white pine for blister rust resistance: A review of progress in Ontario

Lu¹,

Derbowka²

2009

The Forestry Chronicle

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White pine blister rust (caused by Cronartium ribicola J.C. Fisch.) is a primary cause of poor survival and growth of eastern white pine (Pinus strobus L.) and has contributed to the species' decline across its range. Genetic resistance to C. ribicola is generally weak in eastern white pine, possibly owing to the absence of meaningful resistance alleles. Integrating major resistance genes from Eurasian 5-needle pine species to P. strobus has been demonstrated to be effective through traditional plant breeding approaches. This paper provides a review of progress after more than half a century of breeding and testing in Ontario.Key words: Pinus strobus, white pine blister rust, genetic resistance, interspecific hybridization RÉSUMÉ La rouille vésiculeuse du pin blanc (provoquée par Cronartium ribicola J.C. Fisch.) constitue la cause principale de la grande mortalité et de la faible croissance chez le pin blanc de l'Est (Pinus strobus L.) et a contribué au déclin de l' espèce dans toute son aire de distribution. La résistance génétique au C. ribicola est généralement faible chez le pin blanc de l'Est, possiblement suite à l'absence d'allèles pouvant offrir une résistance significative. L'intégration de gènes de résistance importante tirés d'une espèce eurasienne de pin à cinq aiguilles par le P. strobus s' est avéré être efficace selon les approches habituelles d'hybridation des plantes. Cet article présente une révision des progrès réalisés après plus d'un demi-siècle d'hybridation et d' essai en Ontario.Mots clés : Pinus strobus, rouille vésiculeuse du pin blanc, résistance génétique, hybridation interspécifique

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Section: Historical White Pine Breeding Efforts In Ontariomentioning

confidence: 99%

Section: Breeding Eastern White Pine Interspecific Hybridsmentioning

confidence: 99%

Section: Progress In Breeding For Blister Rust Resistancementioning

confidence: 99%

Section: Progress In Breeding For Blister Rust Resistancementioning

confidence: 99%

Section: Field Testing and Demonstrating Resistancementioning

confidence: 99%

See 3 more Smart Citations

Breeding eastern white pine for blister rust resistance: A review of progress in Ontario

Lu¹,

Derbowka²

2009

The Forestry Chronicle

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Quantitative, nondestructive estimates of coarse root biomass in a temperate pine forest using 3‐D ground‐penetrating radar (GPR)

2017

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Coarse root biomass was estimated in a temperate pine forest using high‐resolution (1 GHz) 3‐D ground‐penetrating radar (GPR). GPR survey grids were acquired across a 400 m2 area with varying line spacing (12.5 and 25 cm). Root volume and biomass were estimated directly from the 3‐D radar volume by using isometric surfaces calculated with the marching cubes algorithm. Empirical relations between GPR reflection amplitude and root diameter were determined for 14 root segments (0.1–10 cm diameter) reburied in a 6 m2 experimental test plot and surveyed at 5–25 cm line spacing under dry and wet soil conditions. Reburied roots >1.4 cm diameter were detectable as continuous root structures with 5 cm line separation. Reflection amplitudes were strongly controlled by soil moisture and decreased by ~40% with a twofold increase in soil moisture. GPR line intervals of 12.5 and 25 cm produced discontinuous mapping of roots, and GPR coarse root biomass estimates (0.92 kgC m−2) were lower than those obtained previously with a site‐specific allometric equation due to nondetection of vertical roots and roots <1.5 cm diameter. The results show that coarse root volume and biomass can be estimated directly from interpolated 3‐D GPR volumes by using a marching cubes approach, but mapping of roots as continuous structures requires high inline sampling and line density (<5 cm). The results demonstrate that 3‐D GPR is viable approach for estimating belowground carbon and for mapping tree root architecture. This methodology can be applied more broadly in other disciplines (e.g., archaeology and civil engineering) for imaging buried structures.

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Improving the resistance of eastern white pine to white pine blister rust disease

Pike

Berrang

Rogers

et al. 2018

Forest Ecology and Management

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Survival, growth and wood specific gravity of interspecific hybrids of Pinus strobus and P. wallichiana grown in Ontario

Cited by 5 publications

References 8 publications

Breeding eastern white pine for blister rust resistance: A review of progress in Ontario

Breeding eastern white pine for blister rust resistance: A review of progress in Ontario

Quantitative, nondestructive estimates of coarse root biomass in a temperate pine forest using 3‐D ground‐penetrating radar (GPR)

Improving the resistance of eastern white pine to white pine blister rust disease

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